Summary of the invention
The invention provides a kind of multi-way integrated communication method that is used for wireless multimedia transmission that can overcome the above problems.
In first aspect, the invention provides a kind of multi-way integrated communication method for wireless multimedia transmission, at first the front end wireless terminal device according to its installment state be connected strategy and automatically set up a plurality of wireless communication links and connect; Then this front end wireless terminal device is classified to load; Then this front end wireless terminal device is sorted load routing, and routing policy is and dynamically adjust weighted value; At last this front end wireless terminal device according to this weighted value with the data distribution in this front end wireless terminal device to each wireless communication link.
In second aspect, the invention provides a kind of front end wireless terminal device for wireless multimedia transmission, this equipment comprises wireless communication interface, connection management module, load sort module, weight proportioning module.This wireless communication interface quantity is more than one, is used for setting up a plurality of wireless communication links, and the data flow of shunting this front end wireless terminal device.This connection management module is set up a plurality of wireless communication links automatically according to the installment state of setting strategy and this wireless communication interface.This load sort module is used for load is classified, so that the load of the network application that is optimized.This weight proportioning module is used for the use weight of the every communication link of dynamic proportioning, and gives this link an initial weight value according to technical indicator and the empirical value of every link, and dynamically adjusts this weighted value.
In the third aspect, the invention provides a kind of multi-way integrated communication system for wireless multimedia transmission, comprise network-termination device and front end wireless terminal device.This front end wireless terminal device is set up various wireless communication links by the wireless communication interface of multiple types, and by this various wireless communication links its data is sent to described network-termination device.This network-termination device receives the packet from this various wireless communication links, and packet is done ordering and combination, thereby restores the data that sent to this network-termination device by the front end wireless terminal device.
In one embodiment of the invention, described dynamic adjustment weighted value method is at first to add up the feedback message amount that sends message, receives message and transmission message, analyze again this statistics to obtain every Link State in nearest a period of time, then according to this Link State every Link State in a period of time in future is estimated, and with the factor of this estimated value as the up-to-date weight of each link.
In another embodiment of the present invention, described dynamic adjustment weighted value method is implemented state at first monitoring every link, each link network operational factor of Real-time Obtaining, predict the outcome as a factor of the up-to-date weight of each link again according to next each link-state change of the moment of each link parameter variation prediction, and with this.
In yet another embodiment of the present invention, network-termination device receives the data from each wireless communication link, and the data that this receives are done combination and sorted to restore the data by described front end wireless terminal device transmission.
In another embodiment of the present invention, network-termination device sends corresponding information data and control command according to the data content that receives.
The present invention is by greatly having improved data distribution to each wireless communication link the bandwidth of wireless terminal, and the big data quantity information transmittings such as audio frequency and video have effectively been guaranteed, carry out joint communication by the different systems wireless communication link in addition, avoided the single wireless communication standard to be subject to the restriction of WAP (wireless access point) number of users and bandwidth, and can guarantee when a certain communication standard breaks down, can carry out transfer of data by other communication standard.
Embodiment
Fig. 1 is the multi-way integrated communication system schematic diagram of one embodiment of the invention.Among Fig. 1, front end wireless terminal device 110 comprises a plurality of wireless communication interfaces, and these a plurality of wireless communication interfaces and corresponding a plurality of WAP (wireless access point) are set up a plurality of wireless communication links.Front end wireless terminal device 110 branches to the audio, video data that this locality gathers in these some wireless communication links by these some wireless communication interfaces, by communication network 140 this audio, video data is transferred to Network Termination Type 1 50 again, Network Termination Type 1 50 receives this audio, video data and this audio, video data is done arrangement and combination, thereby restores this audio, video data that is sent by this front end wireless terminal device 110.
In one embodiment of the invention, described wireless communication link is in TD-SCDMA, WCDMA, CDMA200, GPRS, EDGE, CDMA 1X, WIFI, the radio communication standards such as WIMAX, BGAN one.In another embodiment of the present invention, described front end wireless terminal device 110 is wireless multimedia terminal.In yet another embodiment of the present invention, described WAP (wireless access point) is radio communication base station.In another embodiment of the present invention, Network Termination Type 1 50 is catv terminal (if any the computer on line terminal) or wireless terminal (such as wireless notebook or mobile phone terminal).
The below elaborates front end wireless terminal device 110, Network Termination Type 1 50 each functions of modules and effect and multi-way integrated communication method.
Fig. 2 is front end wireless terminal device schematic diagram in the multi-way integrated communication system of one embodiment of the invention.This front end wireless terminal device comprises wireless communication interface 250, connection management module 210, routing management module 220, nucleus module 230, weight proportioning module 240, wherein, weight proportioning module comprises historical statistics module 241 and equipment condition monitoring module 242, and nucleus module 230 comprises load sort module 231.
The wireless communication link of multiple different systems is set up and discharged to connection management module 210 automatically according to installment state and the setting strategy of front end wireless terminal device, and the state that connects again is sent to routing management module 220.In one embodiment of the invention, connection management module 210 is preferentially selected suitable connection type and number of connection according to the predefined strategy of front end wireless terminal device.In another embodiment of the present invention, by mounted wireless communication link this front end wireless terminal device network cycle of living in ground is carried out acquisition of signal, and select connection type and number of connection according to result of that probe.
Routing management module 220 is managed the multiple route of this front end wireless terminal device according to the connection status of front end wireless terminal device, that is to say, the variation of front end wireless terminal device routed path and the connection status of this front end wireless terminal device link, namely when setting up a connection, increase a routed path, routed path of deletion when discharging a connection.
Load sort module 231 is used for load is classified, and namely distinguishes load and whether be traditional application load or optimized network application load (being non-traditional application load).This load sort module utilization be that tradition use to send message and has fixation features and device forwards message (being non-traditional application message) with the characteristic of specific markers, differentiate classification under the load.If load is traditional application load then still use traditional routing policy namely all messages all select same path; If load be non-traditional application load then all messages all select optimal path.
Weight proportioning module 240 is used for the use weight of the every communication link of proportioning.In one embodiment of the invention, the use weight of the every communication link of this average proportioning of weight proportioning module.In another embodiment of the present invention, this weight proportioning module gives every link an initial weight value according to the technical indicator of every communication link and empirical value such as the network bandwidth, time delay, delay jitter etc., and dynamically adjusts this weighted value based on historical statistics result and the enforcement state of every communication link.
Historical statistics module 241 in the weight proportioning module 240 is used for adding up every wireless communication link and sends message, receives message, sends the quantity that message feeds back message, the analytic statistics result is to obtain the state of every communication link in nearest a period of time, and state-based changes successional universal law (being that Link State has continuity) state of every communication link in a period of time in future is estimated, and with this estimated value as a factor that calculates the up-to-date weight of respective link, so that weight proportioning module 240 is dynamically adjusted weighted value according to this factor.
Equipment condition monitoring module 242 in the weight proportioning module 240 is used for monitoring the enforcement state of every communication link, the network operation parameter of each communication link of Real-time Obtaining, again according to next the constantly variation of each communication link state of each communication link parameter variation prediction, and this is predicted the outcome as another factor of the up-to-date weight of respective link, so that weight proportioning module is dynamically adjusted weighted value according to this factor.
Wireless communication interface 250 quantity are more than one, such as the first wireless communication interface 251, the second wireless communication interface 252, the 3rd wireless communication interface 253, and these a plurality of wireless communication interfaces adopt the different wireless communication standard, are used for the audio, video data that this front end wireless terminal device of shunting gathers in this locality.
Network Termination Type 1 50 receives a plurality of audio, video data bags from wireless communication interface 250, and these a plurality of audio, video data bags are done ordering and combination, thereby restores the audio, video data that is sent by this front end wireless terminal device.
In a preferred embodiment of the invention, this Network Termination Type 1 50 comprises wireless communication interface, connection management module, routing management module, load sort module, weight proportioning module, historical statistics module and the equipment condition monitoring module of multiple types, and each functions of modules effect is identical with corresponding each functions of modules effect of the described front end wireless terminal device 110 of preamble, does not repeat them here.
Fig. 3 is the multi-way integrated communication flow chart of one embodiment of the invention.
In step 310, the first wireless communication interface in the front end wireless terminal device, the second wireless communication interface, the 3rd wireless communication interface according to the installment state of this front end wireless terminal device, set strategy automatically set up with this first WAP (wireless access point) 131, the second WAP (wireless access point) 132, the 3rd WAP (wireless access point) 133 between be connected.
Particularly, in one embodiment of the invention, preferentially select suitable connection type and number of connection according to the predefined strategy of this front end wireless terminal device, such as the connection of five WCDMA standards of preferential connection.
In another embodiment of the present invention, by mounted wireless communication link this front end wireless terminal device network of living in is carried out acquisition of signal, select other suitable connection type and number of connection according to this acquisition of signal result.And this acquisition of signal is periodically to carry out in the front end wireless terminal device course of work, and dynamically changes connection type and number of connection according to this wireless channel conditions.
Need to prove, the release of multi-wad join is identical with the described multi-wad join method for building up of preamble, and the front end wireless terminal device provides multiple route in I P aspect, the variation of this multiple routed path and described connection status link, namely when setting up a connection, increase a routed path, routed path of deletion when discharging a connection.
In step 320, load is classified.Because the network characteristic that traditional application can't adapt to behind the use multilink changes, therefore need to classify to load, thereby the load that tradition is used still use traditional routing policy namely all messages all select same path, non-traditional application (front end wireless terminal device known be optimized network application) load is used the routing policy of optimizing.Concrete sorting technique is based on tradition and uses the message that sends and have fixation features, and by the message (non-traditional application) of device forwards all with specific markers, therefore just can differentiate the classification of load according to message characteristic.
In step 330, the use weight of each wireless communication link of proportioning.In one embodiment of the invention, the use weight of the average every communication link of proportioning.In another embodiment of the present invention, each communication link of Real-Time Monitoring and the dynamic use weight of adjusting each communication link, the below elaborates the method that a kind of intelligent proportioning communication link uses weight.
When joint channel is set up, give every link an initial weight value according to technical standard index and the empirical value of every link in the passage, based on historical statistics method and forward prediction method weighted value is adjusted again.
Close the transmission message of every link in the passage and receive message amount for distich at first based on the historical statistics method and add up, and statistics sends the feedback message amount of message, analyze again this statistics to obtain the state of every link in nearest a period of time, then state-based changes successional universal law every Link State in a period of time in future is estimated, and with this estimated value as a factor that calculates the up-to-date weight of communication link.
At first the enforcement state of every link transmission module in the joint channel to be monitored based on the forward prediction method, each link network operational factor of Real-time Obtaining, as obtain current network operational mode, wireless communication link effective bandwidth, reception of wireless signals intensity, carrier/interface ratio, base station liveness etc., predict the outcome as another factor that calculates the up-to-date weight of communication link again according to next the constantly variation of each Link State of each link parameter variation prediction, and with this.
In step 340, according to the audio, video data in the use weight of each communication link in the joint channel shunting front end wireless terminal device, and each packet made marks to guarantee accurately to be reduced in network-termination device.
Suppose that each communication link of joint channel uses weight only relevant with this wireless communication link effective bandwidth, and suppose that the first wireless communication link 121, the second wireless communication link 122, the 3rd wireless communication link 123 effective bandwidths are respectively 60kbps, 30kbps, 20kbps, then the front end wireless terminal device with the audio, video data amount according to 6: 3: 2 pro rate to this first wireless communication link 121, the second wireless communication link 122, the 3rd wireless communication link 123; If this first wireless communication link 121 interrupts, then the front end wireless terminal device with its audio, video data according to 3: 2 pro rate to this second wireless communication link 122 and the 3rd wireless communication link 123, so the present invention can guarantee effectively that certain wireless communication link breaks down the time by other wireless communication link the transmission of data.
In step 350, a plurality of audio, video data bags that Network Termination Type 1 50 receives from front end wireless communication terminal 110 by many wireless communication links and communication network 140, and each packet is sorted and make up according to each packet marking, thereby restore the audio, video data that is sent by front end wireless terminal device 110.
Preferably, Network Termination Type 1 50 transfers to front end wireless terminal device 110 with its information data that will send and control command by communication network 140 according to its audio, video data content that receives.
In one embodiment of the invention, network-termination device can be sent to the front end wireless terminal device in the multi-way integrated communication mode with data, and this multi-way integrated communication method is identical with the described multi-way integrated communication method of preamble, does not repeat them here.
Need to prove that multi-way integrated communication of the present invention is not limited to transmitting multimedia data, so long as adopt system of the present invention or method the transmission of data all within protection range of the present invention.
Obviously, under the prerequisite that does not depart from true spirit of the present invention and scope, the present invention described here can have many variations.Therefore, the change that all it will be apparent to those skilled in the art that all should be included within the scope that these claims contain.The present invention's scope required for protection is only limited by described claims.